#include <stdio.h>

int main(void)

{
	int x1,x2;
	
	puts("请输入两个整数。");

	printf("整数1:"); scanf("%d",&x1);
	printf("整数2:"); scanf("%d",&x2);

	
	printf("它们的差是%d。\n",(x1>x2)?(x1-x2):(x2-x1));
	
	return (0);
}
